This is definitely a high priority capability we hope to support in the near future; i.e., not available atm.
In the next release we are planning to extend panel with an optional vertical scrollbar. Then any items on the panel will be scrollable without moving the entire page. But extending the design center for WYSIWYG panel with scrolling region is a little more difficult and time consuming to develop and will take a little while.
I developing an example app that shows how to manually create a scrolling panel with custom content. It should be available in next couple of days.
Wayne
Genuitec Mobile Team